In order to study the corrosion problem of the CO2 in natural gas，the corrosivity of medium under different working conditions was analyzed based on the corrosion mechanism.Targeted corrosion test was carried out before material selection.The base and lining materials of bimetallic composite pipe were optimized and explored from the aspects of design and construction.Based on the actual application situation on site，a complete application framework of bimetallic composite pipe was developed.
